Me and my girlfriend had protected sex 9 days(26th October) back. and she started getting this pain in her stomach after 1 or 2 days. very less pain. she was having her loose motions from the day before we had sex. so the pain can happen because of the loose motion too but we still got scared and she ate an Ipill on the 3rd day . we didnt want to take any risk. The protection that we had used, after the usage of the rubber we had put water inside it to see if the rubber had broke or not. but the water didnt leak . so it wasnt broken. the pain stopped after 4 days and so did the loose motion. Today's the 9th day. and she gets her period around this time of the month(4th november) . around this time . and she hasn't got her periods yet. Is it because of the pill or is there any other problem? is there a chance to be pregnant? We checked each condom and everthing was fine. but we're still scared. HELP PLEASE